I've used this load and it is good. Should feel a little lighter than factory rounds. For real mouse farts I've gone down to 3.2 or 3.3 grains, but some of the powder is left unburned in the case, so - not really getting a proper burn is my guess, low pressure, so I went back up to 3.5 I think. Good powder for this cartrdige, very popular for it.
Like others have said, the ranges are confounding, when you see a min load higher than a max load from another set of published data, head scratcher, but different brass expands different, different alloys in bullets behave differently, different primers create variations is combustion, barrel, humidity, temperature, elevation ... when testing all produce variations in results. The only way to explain it is, that set of data, is what that set of tests produced, with those components, on that day. A different amount of crimp, again, will get different results. And it isn't just based on pressure, they're trying to present data so the reloader will have a positive loading experience, so - they'll take barrel leading, accuracy, you name it into consideration. so, say at the higher end, you might see the data or max load end well below the max pressure standard, but - if the testing data started to produce inconsistent results and horrid accuracy above a certain max load, they're not going to recommend that if the data and testing doesn't support it. That's just a theoretical example, not a real one, but there are a myriad of reasons possible, but that info isn't included in the publishings far as I know.
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